1 files changed, 38 insertions, 0 deletions
diff --git a/jstests/noPassthrough/noncapped_oplog_creation.js b/jstests/noPassthrough/noncapped_oplog_creation.js
new file mode 100644
index 00000000000..87dc37e6ed6
--- /dev/null
+++ b/jstests/noPassthrough/noncapped_oplog_creation.js
@@ -0,0 +1,38 @@
+/**
+ * Test that the server returns an error response for operations that attempt to create a non-capped
+ * oplog collection.
+ */
+(function() {
+    'use strict';
+
+    var dbpath = MongoRunner.dataPath + 'noncapped_oplog_creation';
+    resetDbpath(dbpath);
+
+    var conn = MongoRunner.runMongod({
+        dbpath: dbpath,
+        noCleanData: true,
+    });
+    assert.neq(null, conn, 'mongod was unable to start up');
+
+    var localDB = conn.getDB('local');
+
+    // Test that explicitly creating a non-capped oplog collection fails.
+    assert.commandFailed(localDB.createCollection('oplog.fake', {capped: false}));
+
+    // Test that inserting into the replica set oplog fails when implicitly creating a non-capped
+    // collection.
+    assert.writeError(localDB.oplog.rs.insert({}));
+
+    // Test that inserting into the master-slave oplog fails when implicitly creating a non-capped
+    // collection.
+    assert.commandFailed(localDB.runCommand({godinsert: 'oplog.$main', obj: {}}));
+
+    // Test that creating a non-capped oplog collection fails when using $out.
+    assert.writeOK(localDB.input.insert({}));
+    assert.commandFailed(localDB.runCommand({
+        aggregate: 'input',
+        pipeline: [{$out: 'oplog.aggregation'}],
+    }));
+
+    MongoRunner.stopMongod(conn);
+})();